NO. 092Actinide

U

Uranium

Uranium is a heavy radioactive metal widely used as nuclear fuel and in weaponry. Its isotopes are crucial for energy production and geological dating.

Crystal Structure

Face-centered cubic

Technical Specifications

Atomic Mass238.03 u

Density19.1 g/cm³

Melting Point1405 K

Boiling Point4404 K

Atomic Radius156 pm

Electronegativity1.38

Ionization Energy598 kJ/mol

Electron Affinity50 kJ/mol

Bonding TypeMetallic

Oxidation States3, 4, 5, 6

Acid/BaseBasic

ReactivityMedium

Electron Configuration

[Rn] 5f3 6d1 7s2

Discovered ByMartin Heinrich Klaproth

Year1789

Known Isotopes

U-235U-238